Machine for stapling binding wire to box parts



Aug. 23, 1938. A. ROSENMUND MACHINE FOR STAPLING BINDING WIRE TO BOX PARTS Filed Dec. 6, 1954 5 Sheets-Sheet l IVENTOR. #07260 4. POSA-W/II/A Q BY Aug. 23, 1938. A. ROSENMUND 2,127,832

MACHINE FOR STAPILING BINDING WIRE TO BOX PARTS Filed Dec. 6, 1934 5 Sheets-Sheet 2 IN V EN TOR. /9L FEE D L. POSEM/VU/VD. BY

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Aug. 23, 1938. A. ROSENMUND MACHINE FOR STAPLING BINDING WIRE TO BOX PARTS Filed Dec. 6, 1934 5 Sheets-Sheet 3 Aug. 23, 1938. A. L. ROSENMUND 2,127,832

MACHINE FOR STAPLING BINDING WIRE TO BOX PARTS Filed Dec. 6, 1934 5 Sheets-Sheet 4 Illlllli lllllllllll" INVENTOR. HA F/PED LP05F/W/0/V0.

' v /QuMMz ATTORNEYS.

i- 'i A. L. ROSENMUND 2,127,832

MACHINE FOR STAPLING BINDING WIRE TO BOX PARTS Filed Dec. 6, 19.34 5 Sheets-Sheet 5 Patented Aug. 23, 1938 UNITED STATES MACHINE FOR, STAPLING BINDING WIRE TO BOX PARTS Alfred L. Rosenmund, Rockaway, N. J., assignor to stapling Machines 00., a corporation of Delaware Application December 6, 1934, Serial No. 756,219

Claims.

This invention relates to machines which staple binding wire to box parts, such machines being commonly referred to in the box art as box blank machines, and particularly to mechanism for.

5 is shown in the accompanying drawings, in

which- Figure 1 is a side elevation of a wirebound box blank machine embodying the invention, certain parts being omitted for clearness of illustration.

Fig. 2 is an enlarged side elevation of the binding wire feeding means, and showing the position of the parts during a feeding operation.

Fig. 3 is a similar view but showing the position of the parts during an interruption in the feeding of the wire.

Fig. 4 is a front elevation of the feeding means in the position shown in Fig. 2.

Fig. 5 is a front elevation of the feeding means in the position shown in Fig. 3.

Fig. 6 is an end elevation of a portion of the machine seen from the line 6--6 of Fig. 1 sh=3wing the manner in which the several binding wire feeding units are mounted.

As conducive to a better understanding of the invention it should be noted that in the manu facture of wirebound box blanks the box materials are conveyed on endless conveyors beneath staple forming and driving mechanism which forms the staples and drives the staples over binding wire into the box parts to secure the binding wire thereto. The binding wire is carried on a reel and is directed beneath the staple forming and driving mechanism by rollers. The wire is pulled or drawn from the reel by reason of its attachment to the moving box parts. Such a. feeding of the binding wire places a heavy strain on the staples which secure the binding wire to the box parts and, when thin box material is being operated upon the strain resulting from the back pull of the bindingwire frequently pulls the staple out of the thin box material. The present invention is intended to relieve the staples of this stress and thus permit the use of thinner box materials in the manufacture of wirebound boxes.

In Fig. 1 is shown a wirebound box blank machine of conventional type. Such machine consists generally of endless. conveyors l which are trained over a driven sprocket wheel 2 at the delivery end of the machine and over an idler sprocket wheel (not shown because of the guard casing) at the receiving end of the machine. Driven sprocket wheel 2 is keyed to a shaft 3 journaled in frames l. Shaft 3 is rotated to advance the conveyors I in the direction of the arrow in Fig. 1 through. gear connections (not shown) with a main shaft 5, also journaled in side frames 4.

Materials for the box part are placed on the conveyors l and are fed beneath staple forming and driving mechanism designated generally by the numeral 6 in Fig. 1. The stapling mechanism 6 forms staples from staple stock wire automatically fed thereto and drives the formed staples over binding wire into the box parts. As shown in Fig. 1, the binding wire designated W is carried by a reel 7 supported by the framework of the machine, passes over rollers 8 and 9, then through the power-driven feeding mechanism of this invention presently to be described, and then.

over rollers 36 and ti (see Fig. 6) carried by the stapling mechanism i which guide the wire beneaththe stapling mechanism in correct position to cause the driven staples to straddle the wire and secure it to the box parts.

The machine thus generally described (with the exception of the binding wire feeding mechanism) is well known in the art and need not be described in further detail herein. For a detailed description of such a machine reference is made to U. S. Patents Nos. 1,669,383 and 1,738,806.

ihe present invention is directed particularly to mechanism interposed between the wire reel l and the stapling mechanism ll and which is engage the wire W between them and feed the r wire toward the stapling mechanism 6 when the feed rollers it and H are rotated with the wire gripped between them, as hereinafter explained. After passing through the rollers Ml and ll, the binding wire passes over a roller l3 mounted as hereinafter explained) and thence down to the stapling mechanism 5.

It will be understood that a binding wire feed mechanism is provided for each binding wire, as shown in Fig. 6. As there shown, the several binding wire feeding mechanisms are supported and operated by a rotatable shaft [4 journaled at either side of the machine in bearings l5 carried by frames N3 of the machine. Shaft I4 is rotated continuously during the operation of the machine through a sprocket wheel I1 keyed to shaft M, a sprocket chain 18, a sprocket wheel 19 keyed to a stud shaft 20 journaled in side frame which latter shaft is rotated through a sprocket wheel 2| keyed to that shaft through a sprocket chain 22 and a sprocket wheel 23 on shaft 3. The arrangement is such that when the machine is running and the wire feed rollers are in feeding relationship, the wire will be fed at a speed slightly in excess of the speed of travel of the work conveyors I.

As the wire feeding mechanisms are all alike, description of one will suffice. Referring to Fig. 2, the feed roll H is keyed to shaft M to rotate therewith Feed roll I0 is eccentrically mounted in a bracket 24 in which the shaft l4 revolves and which is supported and held against rotary movement by a shaft 25 fixed to bearings at either side of the machine. Roller H carries a gear 28 which is adapted to mesh with a gear 2'! carried by roller l0 when the roller I0 is in the position shown in Fig. 2. The eccentrically mounted roller l0 may be moved from the position shown in Fig. 2 to the position shown in Fig. 3 by raising an arm 28 fixed to the shaft 29 which carries the roller It]. The arm 28 is normally held in the position shown in Fig. 2 by a spring one end of which is secured to the end or the arm 28, and the other end of which is secured to a fixed arm 3i secured to the bracket 24. When in this position the roller I0 is pressed toward the roller l l and the wire W lying between the two rollers is fed by rotation of the rollers H3 and H.

To raise the arm 26 and rollers Hi to interrupt the feed of the wire W there is rockingly mounted on the shaft M a control arm 32 to which is bolted an upwardly extending arm 33, the upper end of which contacts the under side of the arm 28. Referring to Fig. 3, the control arm 32 is normally held in the position there shown by a spring 34, one end of which is secured to the bracket 24 and the other end of which is secured to an elbow arm bolted to the inner end of control arm 32. When in this normal position arm 33 has raised arm 28 and moved roller I0 away from roller ll. When in this position the wire W is not gripped between the rollers and hence little or no feeding force is imparted to the wire.

To control the movement of the eccentrically mounted roller l0 and hence control the feed of the wire W to relieve undue back pull of the wire at the stapling point, control arm 32 is provided at its outer end with a roller l3 over which the wire W passes. When the pull on the wire at the stapling point increases unduly, the pull exerted on the roller I3 will lower the control arm 32 against the action of the spring 34 to the position shown in Fig. 2. This movement lowers the arm 33, permitting the spring 30 to lower the arm 23 and move feed roller Ill toward feed roller H and cause said feed rollers to grip between them. the wire W and feed it toward the stapling mechanism, thus relieving the strain on the wire at the stapling point. When that strain is relieved and the wire slackens between the rollers and the stapling point, the spring 34 will raise control arm 32 to the position shown in Fig. 3, thus raising the roller l0 and discontinuing the power feed of the wire W.

Thus it will be seen that the feed of the wire W is controlled in accordance with the amount of back pull on the binding wire at the stapling point and will automatically adjust itself to relieve undue pressure at the stapling point. The maximum strain at the stapling point may be limited in accordance with the pulling forces of the springs 39 and 34 respectively. Different strength springs may be substituted for different conditions of manufacture.

Among other advantages the power feed mechanism for the binding wire permits the use of very thin box materials in the manufacture of wirebound boxes without subjecting the materials to rupture or breaking resulting from an excessive back pull of the binding wire at the stapling point.

It will be understood that the invention is not to be limited to the specific embodiment shown for purposes of illustration as the inventive features may be variously embodied without departing from the invention.

It will also be understood that all of the features of the invention need not be used con- 0 1. In a machine of the character described, I

the combination of stapling mechanism to staple binding wire to box parts, means to feed binding wire to the stapling mechanism, and means to control said feeding means in accordance with the back pull of the binding wire at the stapling point.

2. In a machine of the character described, the combination of stapling mechanism to staple binding wire to box parts, means to feed the box parts to the stapling mechanism, means to feed binding wire to the stapling mechanism, and means to control the binding wire feeding means, in accordance with the back pull of the binding wire at the stapling point.

3. In a machine of the character described, the combination of stapling mechanism to staple binding wire to box parts, means to feed the box parts to the stapling mechanism, and means operable during the feed of the box parts to feed binding wire to the stapling mechanism at a speed slightly in excess of the speed at which the box parts are fed to the stapling mechanism.

4. In a machine of the character described, the combination of stapling mechanism to staple binding wire to box parts, means to feed the box parts to the stapling mechanism, means operable during the feed of the box parts to feed binding wire to the stapling mechanism at a speed slightly in excess of the speed at which the box parts are fed to the stapling mechanism, and means to interrupt the binding wire feeding means at intervals.

5. In a machine of the character described, the combination of stapling mechanism to staple binding wire to box parts, means to feed the box parts to the stapling mechanism, means to feed binding wire to the stapling mechanism at a speed slightly in excess of the speed at which the box parts are fed to the stapling mechanism, and means controlled by the back pull of the binding wire to interrupt the binding wire feeding means at intervals.

6. In a machine of the character described, the combination of stapling mechanism to staple binding wire to box parts, and means to feed binding wire to the stapling mechanism; said feeding means comprising a pair of feed rollers mounted to permit movement of one roller toward and from the other and means to control such movement in accordance with the back pull of the binding wire at the stapling point.

7. In a machine of the character described, the combination of stapling mechanism to staple binding wire to box parts, means to feed the box parts to the stapling mechanism, additional means operable during the feed of the box parts to feed binding wire toward the stapling mechanism, and means to interrupt the binding wire feeding means during the feed of the box parts.

8. In a machine of the character described, the combination of stampling mechanism to staple binding wire to box parts, means to feed the box parts to the stapling mechanism, and additional means operable intermittently during the feed of the box parts to feed the binding wire toward the stapling mechanism.

9. In a machine of the character described, the combination of stapling mechanism to staple binding wire to box parts, means to feed the box parts to the stapling mechanism continuously, and means to feed binding wire toward the stapling mechanism intermittently during the continuous feed of the box parts.

10. In a machine of the character described, the combination of stapling mechanism to staple binding Wire to box parts, means to feed the box parts to the stapling mechanism, additional means operable during the feed of the box parts to feed binding wire toward the stapling mechanism, and means to vary the operation of the binding wire feeding means Without interrupting the feed of the box parts.

ALFRED L. ROSENMUND. 

